A child with a chronic cough needs to be treated for the cause. Whooping cough should be treated with macrolide antibiotics. Allergic cough should be treated with loratadine. Bronchitis can be treated with cough suppressants. Bronchial asthma can use glucocorticoids. 1. Pertussis: Pertussis is an acute illness caused by the bacterium Bordetella pertussis, which is characterized by spasmodic and prolonged coughing. Macrolides can be used, which include erythromycin and azithromycin. 2. Allergic cough: refers to the patient’s body allergies in contact with triggering factors lead to chronic cough, usually with anti-allergy treatment, including loratadine, etc.. 3. Bronchitis: Bronchitis can lead to symptoms of respiratory infection, which can lead to irritating cough. Cough suppressants, including Ambroxol, are usually recommended. 4. Bronchial asthma: Bronchial asthma is a chronic inflammatory response of the airways, usually with recurrent cough and wheezing symptoms. Glucocorticosteroids, including budesonide, are needed. All of the above medications need to be used under the guidance of a doctor to avoid self-medication. There are many reasons why a child’s cough may not go away, including colds and pneumonia, so it is important to seek regular hospital treatment.